Machine for making leather-board.



PATENTED JUNE 26, 1906.

B. D. ALVORD & H. R. KNOX. MACHINE FOR MAKING LEATHE R BOARD.

APPLICATION FILED DEC. 9. 1905.-

3 SHEETS-SHEET 2.

3 No. 824,086. PATENTED JUNE 26, 1906. l E. D. ALVGRD & H. R. KNOX,

MACHINE FOR MAKING LEATHER BOARD.

, APPLIOATIOK FILED D110. 9. X905.

3 SHEETS-SHEET 3.

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6% c (r 35%, a, 68pm 963 W/JM EDWIN 1). Aili onn AND HARRY R. KNOX, OF'HARTFORD: CONNECTICUT.

MACHINE FOR MAKING LEATHER-BOARD.

Specification of Letters Patent.

Patented June 26, 1906.

Application filed December 9, 1905. Serial No. 291,114.

- To all whom, it may concern:

Be it known that we, EDWIN D. ALVORD and HARRY R. KNOX, citizens of the United States, residin at Hartford, in the county of 5 Hartford and tate of Connecticut, have invented a new and useful Machine for Making Leather-Board, of which. the following is a specification.

This invention relates to a machine in which by the utilization of centrifugal action pulp containing leather or similar fiber that is more or less coarse and greasy is freed from moisture and condensed into sheets.

The object is the production of a machine I 5 of this character which is simple, strong, effition cient, and easily manipulate F' re 1 of the drawings shows an elevaooking toward the edge of such a machine. Fig. 2 shows, on much larger scale, a

29 face view of one section of the machine. Fig.

3 shows a vertical section on the plane indicated by the line 3 3 on Fig. 2. Fig. 4 shows a vertical section on the plane indicated by the line 4 4 on Fig. 2.

The shaft 1, provided with a driving-pulley 2, is journa ed horizontally in common bearings 3, mounted in any convenient manner. Two collars 4 are secured to the shaft at some distance from each other, and ex- 30 tending radially from each of the collars are eight T-irons 5. The inner ends of these irons are riveted to plates 6, that are fastened to the collars. The outer ends of each set of'these radial irons are joined by eight angle-irons 7. A plate 8 is riveted to the curing the irons together.

so as to retain the beds in position without interfering with their movement outwardly when the machine is in action. Each bed preferabl has a perforated wooden body 11 and pe orated inner and outer metallic plates 12.

14, which extend outside of in; w

Outside of each bed is an adjustable head 13. The heads are ments in and out by t e edges of the fastening-plates and are retained in place by gibs t e fastemngplates. Each head preferably has a perfo- 'ded in their mov'e-' rated wooden body 15, with perforated inner and outer metallic plates 16. On the outer face at each of the four corners of each of the outer head-plates is'a lug 17, with a T- shaped groove, and in this groove is the head of a screw 18. Each of these screws extends through the threaded hub of a hand-wheel 19, which hub is supported by a boss on the circumferential ang e-iron. By turning these wheels the heads may be moved in or out from the beds.

A mold 20, containing suitabl -mixed pulp, is placed upon each bed. T e molds shown are formed of a rectangular frame of wood, with a erforated sheet-metal plate 21 and a auze inin 22 at the bottom. The covers for the mold with auze lining 24. The filled molds are broug t to the machine and placed upon the beds, the machine being turned so as to bring each bed successively into a horizontal osition for receiving a mold. When a mol has been placed on a bed, the hand-wheels are turned so as to force the head and the cover down into the mold and ive the pulp a preliminary press. After al of the molds have been placed in the machine and given a pres are perforated plates 23,

liminary press the machine is rapidly rotated.

Centrifu al action due to the revolution of the molds throws off the water and compacts the pulp. This action is aided by the weight of the bed, which is free to move outwardly under centrifugal action and is of sufficient weight to greatly assist in expressin the moisture and compressing the pulp. Vl hen the pulp has been sufficiently condensed and compacted, the heads one at a time are lifted by rotating the hand-wheels and then the molds are removed. The molds are removed from the top of the machine one at a time, thebeds carrying the molds droppin down by gravity, so as to free the molds mm the heads.

The invention claimed is- 1. A machine for making board from pulp having a horizontal shaft, a frame supported by the shaft, perforated beds free to move in and out on the frame, erforated heads adjustably held outside 0 the beds, and molds with perforated bottoms and covers located between the beds and the heads, substantially as specified.

2. A machine for making board from pulp havin a horizontal shaft, a radial frame supporte by the shaft, a circumferential frame astened to the radial frame, perforated beds loosely supported by and movable in and out on the radial frame, perforated heads adj ustably supported by the circumferential frame, and molds with perforated bottoms 5 and covers located between the beds and the heads, substantially as specified.

3. A machine for making board from pulp havin a horizontal shaft, a radial frame suporte by the shaft, a circumferential frame 10 astened to the radial frame, perforated beds movable in and out on the radial frame, perforated heads movable in and out on the radial frame, and hand-Wheels and screws for supporting and adjusting the heads, sub- 15 stantially as specified.

4. A machine for making board from pulp having a horizontal shaft, radiating irons carried b the shaft, irons connecte with the outer ends of thearadial irons, plates securing the radial irons andthe,

circumferential irons, beds movable mafia EDWIN D. ALVORD. HARRY R. KNOX. Witnesses:

HARRY H. WILLIAMS, ETHEL M. LOWE. 

